MongoDB Log switch (Rotate log Files) combat

MongoDB Log switch (Rotate log Files) combat

1. Under MONGO Shell, execute the logrotate command:

Use admin db.runcommand ({logrotate:1})

Need to run on Mongos,mongod,config server.

Variants of the method:

A) run under the Unix shell:

MONGO Localhost/admin–eval "Dbo.runcommand ({logrotate:1})"

b) run under the Unix shell:

MONGO Localhost/admin–eval "Dbo.runcommand ({logrotate:1})"

c) Bash script:

#!/bin/sh # # # Log rotate Mongo Localhost/admin–evel "Db.runcommand ({logrotate:1})" # # Compress newly rotated For f In/var/log/mongodb/mongod.log.???? -?? -?? T?? -??    -??; Do 7za a "$f. Z" "$f" rm–f "$f" done

D) Save the following script to the Logrotate.js file:

Db.getmongo (). Getdb ("admin"). RunCommand ({logrotate:1})

Create Script logrotate.sh:

#!/bin/sh # Clear old logs rm/var/log/mongodb/mongod.log.* # Rotate logs MONGO Logrotate.js

e) logrotate.sh//write to Scheduled task Crontab (requires expect package)

#!/usr/bin/expect–f Spawn/usr/local/mongodb/bin/mongo admin-udev-ptest–quiet expect ">" Send Db.runcomman D ("logRotate") send "\ r \ n" expect ">" Send "Exit"

2. Use the SIGUSR1 signal:

KILL–SIGUSR1 <mongod process id> find/var/log/mongodb/mongodb.log.*-mtime +7–delete

Variants of the method:

A) A timed script written in Python that generates a new log every day and logs for more than 7 days are deleted by itself.

#!/bin/env pythonimport sysimport osimport commandsimport datetime,time#get  Mongo pidmongo_pid = commands.getoutput ("/sbin/pidof mongod") print mongo_pid#send  Sig to mongoif mongo_pid !=  ":cmd = "/bin/kill -usr1 %s "  % (mongo_pid) print cmdmongo_rotate = commands.getoutput (cmd) else:print  "mongod  Is not running "#clean  log which > 7 daysstr_now =  Time.strftime ("%y-%m-%d") Dat_now = time.strptime (Str_now, "%y-%m-%d") array_dat_now =  Datetime.datetime (dat_now[0],dat_now[1],dat_now[2]) lns = commands.getoutput ("/bin/ls -- full-time /var/log/mongodb/|awk  ' {print $6, $9} ' ") for ln in lns.split (' \ n ') : Ws = ln.split () If len (WS)  != 2:continuews1 = time.strptime (Ws[0], "%Y-%m-%d ") Ws2 = datetime.datetime (ws1[0],wS1[1],WS1[2]) if  (ARRAY_DAT_NOW - WS2) .days > 7:v_del =  Commands.getoutput ("/bin/rm -rf /var/log/mongodb//%s"  %  (Ws[1]))

Crontab–e Editing a timed task under root

0 2 * * */root/mongo_log_rotate.py >/root/null 2>&1

3. Log Management tool Logrotate

The best way to automate is to use Logrotate, where copytruncate parameters work better.

Copy the following code into the/etc/logrotate.d/mongodb file to ensure that the path and file name are correct in the script.

# vi/etc/logrotate.d/mongodb/var/log/mongodb/*.log {dailyrotate 7COMPRESSDATEEXTMISSINGOKNOTIFEMPTYSHAREDSCRIPTSCOPYTRUNCATEPOSTROTATE/BIN/KILL-SIGUSR1 ' cat/var/lib/mongo/ Mongod.lock 2>/dev/null ' 2>/dev/null | | trueendscript}# Logrotate–f/etc/logrotate.d/mongodb

4. Mongodb Bug
MongoDB stability is passable. The MongoDB process will also be terminated during the switchover process.
Specific content can be viewed under MongoDB bug system: SERVER-4739, SERVER-3339.

This article is from the SQL Server deep dives blog, so be sure to keep this source http://ultrasql.blog.51cto.com/9591438/1620675

MongoDB Log switch (Rotate log Files) combat